C# Signature:

[DllImport(@"setupapi.dll", CharSet=CharSet.Auto, SetLastError = true)]
static extern IntPtr SetupDiGetClassDevs( ref Guid classGuid, IntPtr enumerator, IntPtr hwndParent, UInt32 flags );

VB Signatures:

    <DllImport("setupapi.dll", _
    EntryPoint:="SetupDiGetClassDevsW", _
    SetLastError:=True, _
    CharSet:=CharSet.Unicode, _
    ExactSpelling:=True, _
    PreserveSig:=True, _
    CallingConvention:=CallingConvention.Winapi)> _
    Private Shared Function SetupDiGetClassDevs( _
    ByRef ClassGuid As GUID, _
    ByVal Enumerator As Integer, _
    ByVal hwndParent As Integer, _
    ByVal Flags As Integer) As Integer
    End Function

    <DllImport("setupapi.dll", _
    EntryPoint:="SetupDiGetClassDevsW", _
    SetLastError:=True, _
    CharSet:=CharSet.Unicode, _
    ExactSpelling:=True, _
    PreserveSig:=True, _
    CallingConvention:=CallingConvention.Winapi)> _
    Private Shared Function SetupDiGetClassDevs( _
    ByRef ClassGuid As GUID, _
    ByVal samDesired As Integer, _
    ByVal Flags As Integer, _
    ByRef hwndParent As String, _
    ByVal Reserved As Integer) As Integer
    End Function

    Public Declare Auto Function SetupDiGetClassDevs Lib "setupapi.dll" ( _
    ByRef ClassGuid As Guid, _
    <MarshalAs(UnmanagedType.LPTStr)> ByVal Enumerator As String, _
    ByVal hwndParent As IntPtr, _
    ByVal Flags As Integer) As IntPtr

User-Defined Types:

None.

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Notes:

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